862671 has 4 divisors (see below), whose sum is σ = 1150232. Its totient is φ = 575112.

The previous prime is 862669. The next prime is 862703. The reversal of 862671 is 176268.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 862671 - 2¹ = 862669 is a prime.

It is a D-number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (862651) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 143776 + ... + 143781.

It is an arithmetic number, because the mean of its divisors is an integer number (287558).

2⁸⁶²⁶⁷¹ is an apocalyptic number.

862671 is a deficient number, since it is larger than the sum of its proper divisors (287561).

862671 is a wasteful number, since it uses less digits than its factorization.

862671 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 287560.

The product of its digits is 4032, while the sum is 30.

The square root of 862671 is about 928.8008397929. The cubic root of 862671 is about 95.1952034280.

Subtracting from 862671 its sum of digits (30), we obtain a triangular number (862641 = T₁₃₁₃).

It can be divided in two parts, 86267 and 1, that added together give a palindrome (86268).

The spelling of 862671 in words is "eight hundred sixty-two thousand, six hundred seventy-one".